A202568 - OEIS

%I #5 Mar 31 2012 12:36:48

%S 56821,713977,9145905,116710359,1467328435,18492393187,233878112373,

%T 2956421289933,37348720724845,471748204134829,5960418808857031,

%U 75308829290550867,951465403865998335,12020694152446594231

%N Number of (n+3)X5 binary arrays with no more than two of any consecutive four bits set in any row or column

%C Column 2 of A202574

%H R. H. Hardin, <a href="/A202568/b202568.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..0..0..0..0..0....0..1..0..0..1....1..1..0..0..0....0..0..0..1..0

%e ..0..1..0..0..1....0..0..1..1..0....1..1..0..0..0....0..1..1..0..0

%e ..1..1..0..0..0....0..1..0..1..0....0..0..0..0..0....0..1..1..0..0

%e ..0..0..0..0..1....0..0..0..0..1....0..0..1..0..1....0..0..0..0..0

%e ..1..0..0..0..0....1..1..0..0..1....0..0..0..0..1....0..0..0..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 21 2011